At Cangzhou Datang Steel Pipe Co., Ltd., we proudly present an array of premium finned tubes, including tension wound finned tubes, embedded finned tubes, and extruded finned tubes. Each of these serves as a cutting-edge solution tailored for various industrial applications.
Our tension wound finned tubes are meticulously crafted by expertly winding a high-quality strip, composed of either aluminium or copper, around the tube under precise tension. This technique ensures optimal heat exchange efficiency and durability. The advanced strip winding technology we employ offers a diverse selection of fin types, including L-Fin, LL-Fin, and KL-Fin, each designed to meet specific thermal transfer needs.
Our innovative embedded fins (G-Fins) are expertly manufactured by winding an aluminium or copper strip into a precisely machined helical groove on the tube's outer surface, providing exceptional heat transfer capabilities.
Tension wound finned tubes, embedded finned tubes, and extruded finned tubes serve as the primary components in air coolers, with applications spanning diverse fields such as:
Heat exchangers in electric, nuclear, thermal, and geothermal power plants, ensuring peak operational efficiency and energy transfer.
Steam condensate systems, where effective heat dissipation is crucial for system performance.
The chemical and petrochemical industry, facilitating essential thermal management processes.
Food processing plants and refrigeration technology, ensuring optimal temperature control and product safety.
Various industrial sectors, including steel mills, incinerators, and gas compression facilities, where our finned tubes deliver outstanding thermal performance.

L-Foot Finned Tube
Our highly efficient and economically advantageous L-Footed finned tubing offers remarkable heat transfer capabilities, especially at lower temperatures. The distinct L-shaped design ensures the fins remain firmly in place, even under the rigors of heat cycling and high-velocity air vibration, thus maintaining reliability and performance.
Our L-Foot Finned Tubes are available in several fin variations, including:
Knurled Fin - Featuring an interference fit type, the Knurled Fin employs mechanical knurling to secure the fin material firmly against the tube wall surface.
LL Fin - The Double Overlap Fin (LL) configuration provides enhanced coverage with a double strip thickness, enveloping the entire base tube for superior performance.
Perforated L Fin - This enhancement includes 'tear drop' slits around the helix, effectively disrupting airflow to bolster thermal efficiency.
L-Foot Fin / Wrap-On Fin
L-Foot Tension Wound Finned Tubes also known as Wrap-On Finned Tubes, are ideal for low-temperature applications where the tube's structural integrity, up to approximately 300 degrees Fahrenheit, is paramount. L-Foot tension wound finned tubes comprise a thin aluminium fin strip, helically wound with precision around the tube's circumference, ensuring snug and efficient thermal contact. The defining 'foot' of the fin strip is strategically formed on one side, aptly named L-Foot, to maximize surface contact. The strip is meticulously wound, with the foot pressing firmly onto the tube's outer surface, ensuring robust adherence. The short horizontal limb of each L is designed to maintain complete contact with the base tube surface, optimizing thermal transfer. The tension in the fin strip during wrapping exerts a forceful seating of the fin foot onto the tube, securing it firmly in place for consistent performance. L-Footed finned tubing is engineered to deliver exceptional heat transfer efficiency, particularly at reduced temperatures. The distinctive L-shaped design is engineered to withstand the rigors of heat cycling and high-velocity air vibrations, maintaining structural integrity. This fin configuration provides a level of atmospheric protection to the tube wall, safeguarding against corrosion and extending service life. The extensive contact area between the tube and fin enhances heat transfer, promoting efficient thermal management. This design is renowned for its high efficiency and cost-effectiveness, providing superior thermal solutions at an affordable cost.
To ensure longevity and performance, the fin ends are stapled securely to prevent unraveling and maintain firm contact between the fin foot and the tube. Maintaining this critical contact is essential for air cooler operation, ensuring efficient heat transfer from the tube wall through the fin to the ambient air.
Advantages:
Perfectly suited for low-temperature applications, ensuring efficiency and reliability.
This finning type stands out as the most cost-effective method available, offering exceptional value.
Easily remove failed fins during production, allowing bare tubes to be re-used for finning, enhancing sustainability.
No need to create a helical groove over the core tube, simplifying production.
Fins can be placed on very thin-walled tubes, particularly desirable when using costly alloy core tubes.
The tube withstands temperatures up to 130°C, without risking atmospheric corrosion or thermal stress.
Application:
Ideal for oil and gas refineries, offering reliable and efficient solutions.
Widely used in petroleum, chemical, and petrochemical industries for superior performance.
Perfect for natural gas treatment, enhancing process efficiency.
Applicable in the steel-making industry, where durability is key.
An asset to power plants for their demanding thermal needs.
Valuable for air conditioning systems, providing enhanced cooling.
Excellent for compressor coolers, boosting performance.
KL Footed Fin / Knurled L Footed Fin
The KL fin also known as the knurled L fin, offers unique benefits. Nearly identical to the Wrap-On fin, crafted using both Wrap-On and Embedded techniques. Fins are made from strips prepared into an L shape, then rolled to curl. Helically wound onto the tube in a continuous loop under tension, ensuring stability. The fin snugly embraces the tube, ensuring a secure fit. A spinning tool knurls the base tube, with fin foot knurled into it for a tight bond and enhanced thermal performance.
With the right fin strip, one fin abuts the next with no space, maximizing protection. This configuration aids in protecting the tube from corrosion. Fins are attached at each end, like L fins, preventing unwinding. KL-Foot tension wound finned tubes are ideal for metal applications. Handles up to 320°C (608°F) maximum operating temperature with ease.
Advantages:
Corrosion-resistant tubes ensure longevity and reliability.
Built to resist vibration, maintaining stability and performance.
Withstands temperatures up to 320°C (608°F), supporting high-performance demands.
A unique combination of high thermal performance, stress resistance, and air corrosion protection.
KL can replace any form of finned tube, offering versatile applications.
LL-Foot Fin / Overlapped L
Fins are produced from strips similar to the L type, with a double L shape for enhanced fit. The LL-Foot Fin - Overlapped L is helically coiled onto the tube under tension. The fin clings to the tube, overhanging the foot of the next fin, fully covering the base tube. This design ensures comprehensive protection against corrosion. In corrosive environments, this tube serves as a cost-effective alternative to expensive extruded fins.
Fins are secured at each end, mirroring the method used in L fins. The LL-type fin tube is expertly engineered to withstand temperatures reaching up to 350 degrees Fahrenheit (approximately 177 degrees Celsius). This robust design ensures exceptional performance in high-temperature environments, making it an ideal choice for demanding applications.
parameters
PRODUCT |
TYPE |
TUBE MATERIAL |
FIN MATERIAL |
TUBE SIZE |
FIN SIZE |
Heat Exchanger Finned Tube |
Extruded Fin Tube |
All Kind of Material can be applied |
Aluminum A1100 |
15.88~50.8 |
7~11.5FPI |
Fin Height Max 16mmH |
L,LL,KL-Foot Fin Tube |
All Kind of Material can be applied |
Copper C1100, C1220... |
12.70~50.8 |
2.3~11.5FPI |
Wrap Around Finned Tube |
Fin Height Max 16mmH |
G-Fin Tube (Embedded Type) |
Aluminum A1100, A1050, A1060... |
|
High Frequency Welded Fin Tube |
A179 Carbon Steel Tube |
Carbon Steel Tube |
12.70~160 |
1.5~7FPI |
Stainless Steel Tube |
Stainless Steel Tube |
0.8~3.2mm. Thickness |
Alloy Steel Material |
Alloy Steel Material |
|
Integral Copper & Copper Alloy High Finned Tube |
C12200, C11000, C70600 |
C12200, C11000, C70600 |
15.88~22.23 |
5~9FPI |
Max 12mm. H |
Oval Finned Tube |
Carbon Steel Tube |
Carbon Steel Tube |
All Size Available |
5~15FPI |
Stainless Steel Tube |
Stainless Steel Tube |
Alloy Steel Material |
Alloy Steel Material |
Copper & Copper Alloy Tube |
Copper & Copper Alloy Tube |
Monometallic Fin Tube |
Low Fin Tube |
Carbon Steel, stainless steel, titanium, copper, brass, nickel alloy, etc. |
-- |
9.52~40 |
12, 16, 19 28 FPI, etc. |
Turbo-C Tube |
Turbo-E Tube |
Corrugated Tube |
All Kind of Material |
-- |
6.35~40 |
2~9FPI |
Application
Our G Finned Tube Heat Exchanger, with its innovative embedded fin design, finds versatile applications across a broad spectrum of industrial needs. It is perfectly suited for use in aftercoolers, air coolers, air heaters, and charge air chillers, to name a few. Additionally, it serves as an efficient component in condensers, convection heaters, electric heaters, and evaporators. Whether for fluid cooling, gas cooling, or heat pipe systems, our heat exchanger is a reliable option. It is also applicable in hydrogen cooling, industrial tumble dryers, intercoolers, and immersion heaters. This product's versatility extends to oil coolers, radiators, refrigeration systems, solvent recovery units, and steam-to-air heat exchangers..







Cangzhou Datang Steel Pipe Co., Ltd., a revered name in the industry, has been distinguished as a premier processor and wholesaler exporting to global markets for an impressive 17 years.
Discover an extensive array of high-performance products including finned tubes, fin tube heat exchangers, air coolers, radiators, economizers, and condensers.Our catalog also features state-of-the-art vaporizers/evaporators, all available through Datang.
We proudly maintain a vast inventory of premium carbon steel seamless pipes, ensuring quality and reliability.Our offerings include ERW pipes, SSAW pipes, and alloy steel pipes, along with a comprehensive selection of pipe fittings and flanges.
We warmly invite you to visit our state-of-the-art factory and look forward to forging beneficial partnerships with you.

Cangzhou Datang Steel Pipe Co., Ltd., a respected manufacturer and wholesaler, has been a distinguished exporter to global markets for 17 remarkable years.
Our team of professional sales and technical experts is dedicated to designing tailored solutions and providing bespoke product customization to meet your unique needs.
Explore our extensive range of superior finned tubes available at Datang.
Our cutting-edge production facilities include the following advanced technologies:
'G' Type Fin Tube (Embedded Finned Tube), 'L', 'LL', 'KL' Type Fin Tube (Wrap Around Finned Tube) with 6 production lines.
High Frequency Welded Fin Tube, including Serrated Finned Tube, with 8 state-of-the-art production lines.
Innovative Laser Welding Finned Tube, featuring 1 dedicated production line.
Extruded Finned Tube, available as Bimetallic Fin Tube & Integral Monometallic Low Fin Tube, with 6 advanced production lines.
We also specialize in customizing fin tube heat exchangers, air coolers, radiators, economizers, and condensers to meet diverse industry needs. Our expertise extends to the customization of vaporizers/evaporators.
Our vast inventory boasts high-quality carbon steel seamless pipes, ensuring superior craftsmanship and performance. We provide ERW pipes, SSAW pipes, and alloy steel pipes specifically for the manufacture of fin tubes, reflecting our commitment to quality.
Additionally, we offer an extensive range of pipe fittings and flanges to complement your requirements.
We warmly welcome you to tour our cutting-edge facilities and eagerly anticipate the opportunity to collaborate with you.
Customer Tour&Cooperation




Frequently Asked Questions (FAQ): Get all your queries answered with our comprehensive FAQ section, designed to provide you clarity and confidence in our offerings.
Q1: Are you a factory or trade company?
A1: We are both a fully-equipped manufacturing factory and an international trade subsidiary, expertly handling exports globally.
Q2: What can you provide?
A2: As industry leaders, we specialize in the manufacture of Radiators, Heat Exchanger Equipment, and an array of Fin Tubes, tailored to your needs.
Q3: Where is your factory?
A3: Nestled in the industrious city of Cangzhou, Hebei province, China, our factory boasts state-of-the-art machinery to serve you best.
Q4: How do you control quality?
A4: Each shipment is accompanied by a thorough Inspection & Guarantee Certificate, and we offer Third Party Inspections for your peace of mind.
Q5: What are the advantages of your company?
A5: With a team of seasoned professionals, our competitive pricing and exceptional after-sales service set us apart from the rest.
Q6: Can you arrange the shipment?
A6: Absolutely! We have long-standing partnerships with reliable forwarders, ensuring your shipment is handled with utmost care.
Q7: How about the delivery time?
A7: Delivery timelines are order-dependent, typically executed within 30 days post-receipt of your advance payment.
Q8: Can you provide sample?
A8: Yes, we offer complimentary small samples from our inventory, so you can experience our quality firsthand.
Reach out to us today for further details and let us assist you in making an informed decision!